(19)

(11)

EP 2 618 738 A2

(12)

(88) Date of publication A3: 07.06.2012 (43) Date of publication: 31.07.2013 Bulletin 2013/31 (21) Application number: 11763975.7 (22) Date of filing: 22.09.2011

(51) International Patent Classification (IPC):  A61B 6/02(2006.01) G01T 1/29(2006.01) G01N 21/47(2006.01) (86) International application number: PCT/GB2011/051786 (87) International publication number: WO 2012/038749 (29.03.2012 Gazette 2012/13)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR (30) Priority: 05.07.2011 GB 201111423 24.09.2010 GB 201016088 (71) Applicant: Phase Focus Limited Sheffield S3 7RD (GB)	(72) Inventors: RODENBURG, John Marius South Yorkshire S3 7RD (GB) MAIDEN, Andrew South Yorkshire S3 7RD (GB) HUMPHRY, Martin South Yorkshire S3 7RD (GB) (74) Representative: Harrison Goddard Foote LLP  4th Floor Merchant Exchange 17-19 Whitworth Street West Manchester M1 5WG Manchester M1 5WG (GB)